Description:

This is a power bank kit (including circuit board and shell), not a finished product; not including the battery, etc.
You need to buy 2pcs 18650 battery. DIY free soldering design, you can do it by yourself.
Over-charge, over-discharge, over-heat, over-power, over-voltage and short circuit protection, much safer charging.
Once the upper and lower shells are buckled, it is very difficult to open the upper and lower shells again because it is the buckle structure.
Do not install the battery positive or negative wrong.

Specification:

Size: 10*4.7*2.2cm

Package Includes:

2 pieces cover (top & bottom)